.nav-ul-li:nth-child(1) a{
    border-bottom: 3px solid #027cdb;
}
.adv{
    width: 100%;
    min-width: 375px;
    overflow: hidden;
}
.adv img{
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.main{
    margin-top: 20px;
    width: 100%;
    min-width:375px;
}
.main-heart{
    width: 85%;
    margin: 0 auto;
    min-width:375px;
    max-width: 1600px;
    display: flex;
    gap: 20px;
    
}
.aside{
    position: relative;
    flex: 1.2;
    min-width: 0;
    background-color:#35384d;
    padding: 10px 0;
    border-radius: 10px 0 0 10px;
}
.aside-item{
    /* position: relative; */
    width: 100%;
    padding: 20px;
    box-sizing: border-box;
    transition: 0.2s;
}
.aside-item:hover{
    background-color: #2c2e40;
}
.aside h5{
    color: #fff;
}
.aside-font{
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    color: #b1bbc3;
    font-size: 12px;
    cursor: pointer;
    transition: 0.5s;
}
.aside-font:hover{
    color: #fff;
}
.icon-youjiantou {
    position: absolute;
    width: 8px;
    height: 8px;
    color: #525a67;
    font-size: 8px;
    right: 10px;
    top: 17px;
}
.aside-item-hidden{
    position: absolute;
    background-color: #fff;
    height:427.44px;
    left: 100%;
    top: 0px;
    padding: 10px 0px 0px 30px ;
    width: 670px;
    opacity: 0; 
    height: 100%;
    visibility: hidden;
    z-index: 1;
    box-sizing: border-box;
}
.hidden-top,.hidden-bottom{
    display: flex;
    gap: 40px;
}
.hidden-top h6,.hidden-bottom h6{
    font-size: 16px;
    font-weight: 700;
    white-space: nowrap;
    color: #525a67;
}
.hidden-top-item a,.hidden-bottom a{
    display: inline-block;
    width: 230px;
    /* height: 20px; */
    text-align: center;
    border:1px solid #ff8c1b;
    color: #ff8c1b;
    padding: 5px 10px;
    margin-right: 20px;
    margin-bottom: 10px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    /* box-sizing: border-box; */
    /* line-height: 30px; */
    transition: 0.2s;
}
.aside-item:hover .aside-item-hidden{
    opacity: 1;
    visibility: visible;
}
.hidden-top-item a:hover,.hidden-bottom a:hover{
    background-color: #ff8c1b;
    color: #fff;
}
.aside-item:first-child{
    border-top-left-radius: 10px;
}
.aside-item:last-child{
    border-bottom-left-radius: 10px
}
.slide{
    flex: 6;
}
.slide a{
    display: inline-block;
    width: 100%;
    height: 100%;
    position: relative;
}
.slide img{
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.slide a .icon-zuojiantou,.slide a .icon-youjiantou{
     position: absolute;
     font-size: 40px;
     width:60px;
     height: 60px;
     background-color: rgba(0, 0, 0, 0.5);
     text-align: center;
     line-height: 60px;
     border-radius: 50%;
     opacity: 0;
     visibility: hidden;
     transition: 0.5s;
}
.slide a .icon-zuojiantou{
     left: 30px;
     top: 50%;
     margin-top: -30px;
}
.slide a .icon-youjiantou{
     right:30px;
     top: 50%;
     margin-top: -30px;
}

.slide:hover a .icon-youjiantou,.slide:hover a .icon-zuojiantou{
          opacity: 1;
          visibility: visible;
}
.slide a .icon-youjiantou:hover,.slide a .icon-zuojiantou:hover{
    color: #027cdb;
}
.livebroadcast{
    width: 100%;
    padding-top: 50px;
}
.livebroadcast-heart{
    width: 85%;
    margin: 0 auto;
    min-width:375px;
    max-width: 1600px;
}
.livebroadcast-top{
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}
.livebroadcast-top-left h3{
    font-size: 24px;
    font-weight: 500;
    margin-right: 5px
}
.livebroadcast-top-left{
    display: flex;
    align-items: center;
    /* gap: 5px; */
}
.livebroadcast-top-left img{
    height: 23px;
    margin-bottom: 5px;
    margin-right: 5px
}
.livebroadcast-top-left span{
    font-size: 14px;
    color: #87959f;
}
.livebroadcast-top-right a{
     font-size: 14px;
     color: #87959f;
     transition: 0.2s;
}
.livebroadcast-top-right a:hover{
    color: #666;
}
.livebroadcast-bottom{
   
    /* background-color: #fff; */
    display: grid;
    grid-template-columns: repeat(4,1fr);
    gap: 20px;
    box-sizing: border-box;
}
.livebroadcast-bottom-content{
    background-color: #fff;
    padding: 10px 10px;
    transition: 0.5s;
    border-radius: 10px;
    min-width: 0;

}
.livebroadcast-bottom-middle img{
    width: 100%;
    transition: 0.5s;
    border-radius: 10px;
}
.livebroadcast-bottom-content:nth-of-type(1){
    grid-column: 1 / span 2;
}
.livebroadcast-bottom-top .time{
     font-size: 14px;
}
.livebroadcast-bottom-top{
    display: flex;
    justify-content: space-between;
}
.livebroadcast-bottom-top .avatar img{
    width: 24px;
    height: 24px;
     border-radius: 50%;
}
.avatar{
    cursor: pointer;
}
.avatar span{
    transition: 0.5s;
}
.avatar:hover{
    color: #027cdb;
}
.time em{
     color: #ff5900;
}
.livebroadcast-bottom-content h5 {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    width: 100%;
    padding: 10px 0;
}
.livebroadcast-bottom-content h5 a{
    font-size: 14px;
    font-weight: 700;
    transition: 0.2s;
}
.livebroadcast-bottom-content h5:hover a{
    color: #027cdb;
}
.livebroadcast-bottom-middle{
      position: relative;
      overflow: hidden;
}
.livebroadcast-bottom-middle a{
      position: absolute;
      padding: 1px 10px;
      background-color: #ff3f72;
      color: #fff;
      top: 10px;
      left: 10px;
      font-size: 14px;
      border-radius: 10px;
    }
    .livebroadcast-bottom-middle span{
        position: absolute;
        padding: 0.0313rem 10px;
        background-color: rgba(0, 0, 0, 0.5);
        color: #fff;
        right: 10px;
        top: 10px;
        font-size: 12px;
        border-radius: 10px;
    }
    .livebroadcast-bottom-content:hover img{
        transform: scale(1.1);
    }
    .livebroadcast-bottom-bottom{
        display: flex;
        justify-content: space-between;
        padding-top: 10px;
    }
    .time-left,.like-right{
        font-size: 12px;
        color: #b1bbc3;
    }
    .livebroadcast-bottom-content:hover{
        box-shadow: 0 10px 12px rgba(0, 0, 0, 0.1);
    }
    .tutorial{
        width: 100%;
        padding:100px 0 30px;
    }
    .tutorial-heart{
        width: 85%;
        margin: 0 auto;
        min-width:375px;
        max-width: 1600px;
    }
    .tutorial-heart-ul{
        display: flex;
        gap: 20px;
        flex-wrap:wrap;
    }
     .tutorial-heart-ul-li{
        width: calc((100% - 20px * 4) / 4);
       border-radius: 10px;
        background-color: #fff;
        transition: 0.2s;
    }
    .tutorial-heart-ul-li:hover{
        box-shadow: 0 10px 12px rgba(0, 0, 0, 0.1);
    }
    .tutorial-middle-img{
        overflow: hidden;
        border-radius: 10px;
    }
    .tutorial-middle-img img{
        width: 100%;
        transition: 0.5s;
    }
    .tutorial-middle .tutorial-middle-money, .tutorial-middle h5{
        padding:0 10px;
    } 
    .tutorial-middle h5{
        font-size: 14px;
        font-weight: 700;
        transition: 0.2s;
        cursor: pointer;
        padding: 10px 0;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }
    .tutorial-middle h5:hover{
        color: #027cdb;
    }
    .tutorial-middle-money{
        display: flex;
        justify-content: space-between;
    }
    .money-left{
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }
    .money-left a{
        display: inline-block;
        padding: 1px 2px;
        margin-right: 5px;
        color: #87959f;
        background-color: #f6f8fa;
        font-size: 12px;
        transition: 0.2s;
        border-radius: 5px;
        margin-bottom: 20px;
    }
    .money-right span{
        color: #ff5900;
    }
    .money-left a:hover{
        background-color: #87959f;
        color: #fff;
    }
    .tutorial-middle-author{
        padding: 10px;
    }
    .tutorial-middle-author span{
        font-size: 12px;
        color: #525a67;
    }
    .tutorial-middle-author .author img{
             width: 24px;
             height: 24px;
             border-radius: 50%;
    }
    .tutorial-heart-ul-li:hover .tutorial-middle-img img{
        transform: scale(1.1);
    }
    .specialized{
        width: 100%;
        background-color: #fff;
        padding:50px 0;
    }
    .specialized-heart{
        width: 85%;
        margin: 0 auto;
        min-width:375px;
        max-width: 1600px;
    }
    .specialized-bottom-ul{
        display: flex;
        gap: 20px;
        flex-wrap: wrap;
    }
    .specialized-img img{
        width: 100%;
        border-radius: 10px;    
    }
    .specialized-bottom-ul-li{
        width: calc((100% - 20px * 4) / 4);
        background-color: #f6f8fa;
        transition: 0.2s;
        padding-bottom: 10px;
        border-radius: 10px;
    }
    .specialized-bottom-ul-li:hover{
        box-shadow: 0 10px 10px rgba(0, 0, 0, 0.1);
    }
    .specialized-bottom-ul-li h5 img{
        width: 50px;
        height: 20px;
        margin-right: 2px;
    }
    .specialized-bottom-ul-li h5 {
         font-size: 16px;
         font-weight: 700;
         padding: 10px 10px 0 10px;
         margin-bottom: 2px;
         white-space: nowrap;
         overflow: hidden;
         text-overflow: ellipsis;
    }
    .student{
        display: flex;
        justify-content: space-between;
        padding: 0 10px;
        margin-bottom: 2px;
    }
    .student span{
        font-size: 12px;
        color: #87959f;
    }
    .student em{
        color: #ff5900;
        font-size: 12px;
    }
    .teacher{
        width: 95%;
        margin: 0 auto;
        background-color: #fff;
        padding: 10px;
        box-sizing: border-box;
        border-radius: 10px;
    }
    .teacher span{
        font-size: 12px;
        color: #525a67;
    }
    .teacher-information{
        display: flex;
        align-items: center;
    }
    .teacher-left img{
        width: 40px;
        height: 40px;
        border-radius: 50%;
        margin-right: 10px;
        cursor: pointer;
    }
    .teacher-right{
        width:75%;
    }
    .teacher-right img{
        width: 16px;
        height: 16px;

    }
    .teacher-right p{
        font-size: 12px;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        color: #525a67;
    }
    .teacher-right span{
        font-size: 16px;
        cursor: pointer;
        transform: 0.2s;
    }
    .teacher-right span:hover{
        color: #027cdb;
    }
    .opus{
        width: 100%;
        padding: 50px 0;
    }
    .opus-heart{
        width: 85%;
        margin: 0 auto;
        min-width:375px;
        max-width: 1600px;
    }
    .opus-ul{
        display: flex;
        gap: 20px;
        flex-wrap: wrap;
    }
    .opus-ul-li{
        width: calc((100% - 20px * 5) / 5);
        transition: 0.2s;
        background-color: #fff;
    }
    .opus-ul-li:hover{
        box-shadow: 0 10px 10px rgba(0, 0, 0, 0.1);
    }
    .opus-img {
        position: relative;
    }
    .opus-img img{
        width: 100%;
    }
    .day{
        position: absolute;
        width: 120px;
        height: 30px;
        line-height: 30px;
        background-color: rgba(0, 0, 0, 0.5);
        color: #fff;
        font-size: 12px;
        top: 10px;
        left: 5px;
        border-radius: 10px;
    }
    .day img{
        width: 22px;
        height: 29px;
    }
    .opus-student{
        padding: 0 10px;
        margin: 5px 0;
    }
    .opus-student span{
        font-size: 14px;
        transition: 0.5s;
        cursor: pointer;
    }
    .opus-student span:hover{
        color: #027cdb;
    }
    .opus-student img:first-of-type{
        width: 24px;
        height: 24px;
        border-radius:50%;
        cursor: pointer;
        margin-right: 5px;
    }
    .opus-student img:nth-of-type(2){
        width: 14px;
        height: 14px;
    }
    .opus-ul-li p{
        font-size: 12px;
        padding: 0 10px 10px;
        text-align: center;
        margin: 0 auto;
        /* background-color: #004c98; */
    }
    .opus-ul-li p span{
        display: inline-block;
        background-color: #f6f8fa;
        width: 100%;
        color: #525a67;
        padding: 5px 0;
        border-radius: 10px;
        transition: 0.2s;
        cursor: pointer;
    }
    .opus-ul-li p span:hover{
        background-color: #525a67;
        color: #fff;
    }
    .adv2{
        width: 100%;
        padding-bottom: 50px;
    }
    .adv2-heart{
        width: 85%;
        margin: 0 auto;
        min-width:375px;
        max-width: 1600px;
    }
    .adv2-heart img{
        width: 100%;
    }
    .news{
        width: 100%;
        background-color: #fff;
        padding: 50px 0;
    }
  
    .new-heart{
        width: 85%;
        margin: 0 auto;
        min-width:375px;
        max-width: 1600px;
    }
    .news .new-heart .livebroadcast-top .livebroadcast-top-left{
                 margin-bottom: -15px;
    }
    .news-nav{
        margin-bottom: 15px;
    }
    .news-nav span,.news-nav em{
        font-size: 12px;
        color: #87959f;
        cursor: pointer;
        transition: 0.2s;
    }
    .news-nav span:hover,.news-nav em:hover{
        color: #525a67;
    }
    .news-main{
        display: flex;
        gap: 40px;
    }
    .news-adv{
        display: flex;
        gap: 30px;
        margin-bottom: 30px
    }
    .news-adv-right{
        width: 570px;
    }
    .news-adv-left {
        overflow: hidden;
    }
    .news-adv-left img{
        width: 164px;
        height: 92px;
        transition: 0.2s;
        border-radius: 10px;
    }
    .news-adv-left img:hover{
        transform: scale(1.1);
    }
    .news-adv-right h3{
        font-size: 20px;
        color: #525a67;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        transition: 0.5s;
        cursor: pointer;
    }
    .news-adv-right p:nth-of-type(1){
        font-size: 14px;
        margin-bottom: 5px;
    }
    .news-adv-right:hover h3{
        color: #87959f;
    }
    .news-adv-right p:nth-of-type(2){
          font-size: 12px;
          color: #b1bbc3;
    }
    .news-adv-right p:nth-of-type(2) a{
          padding: 1px 5px;
          background-color: #73b2fc;
          color: #fff;
  }
  .news-content{
      flex: 5;
  }
    .news-main .news-aside{
        flex: 1.5;
        min-width: 0;
    }
    .news-aside-ul-li p{
        display: inline-block;
        width: 100%;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }
    .news-aside-ul-li p a{
        color: #525a67;
        transition: 0.2s;
        font-size: 14px;
    }
    .news-aside-ul-li p a:hover{
        color: #87959f;
    }
    .news-aside-ul-li span{
        font-size: 12px;
        color: #87959f;
        margin-top: -5px;
    }
    .news-aside-ul-li{
        transition: 0.2s;
    }
    .news-aside-ul-li:hover{
        transform: translateX(20px);
    }
    .smallicons{
        display: none;
    }
    @media screen and (max-width:1116px){
         .main-heart .aside{
           display: none;
         }
         .opus-ul-li {
            width: calc((100% - 20px * 3) / 4);
         }
         .news-aside{
            display: none;
         }
         .main-heart{
            width: 95%;
         }
         .smallicons-heart{
            width: 95%;
         }
         .tutorial-heart{
            width: 95%;
         }
         .specialized-heart{
            width: 95%;
         }
         .opus-heart{
            width: 95%;
         }
         .adv2-heart{
            width: 95%;
         }
         .new-heart{
            width: 95%;
         }
         .footer-heart{
            width: 95%;
         }
    }
    @media screen and (max-width:1095px){
        .specialized-bottom-ul-li{
            width: calc((100% - 20px * 2) / 3);
        }
    }
    
    @media screen and (max-width:1024px){
     .livebroadcast-bottom-content:nth-child(3){
        display: none;
     }
     .livebroadcast-bottom{
        grid-template-columns: repeat(3,1fr)
     }
     .tutorial-heart-ul-li{
        width: calc((100% - 20px * 2) / 3)
     }
}
@media screen and (max-width:879px){
    .footer-top-left{
        gap: 10px;
    }
    .opus-ul-li{
        width: calc((100% - 20px * 2) / 3);
    }
    .specialized-bottom-ul-li{
        width: calc((100% - 20px * 1    ) / 2);
    }
    .tutorial-heart-ul-li{
        width: calc((100% - 20px * 1) / 2)
    }
    .footer-top-left dl:nth-of-type(1){
        flex: 1;
        min-width: 0;
    }
    .footer-top-left dl:nth-of-type(2){
        flex: 1;
        min-width: 0;
    }
    .footer-top-left dl:nth-of-type(3){
        flex: 1;
        min-width: 0;
    }
    .footer-top-left dd{
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }
    .news-adv-right h3{
        font-size: 18px;
    }
}
@media screen and (max-width:800px){
    .livebroadcast-bottom-content:nth-child(2){
        display: none;
    }
    .livebroadcast-bottom{
        grid-template-columns: repeat(2,1fr)
    }
    .opus-ul-li{
        width: calc((100% - 20px * 1) / 2)
    }
    .opus-ul-li p span{
        font-size: 14px;
    }
    .money-left a{
        font-size: 14px;
    }
    .money-left a{
        font-size: 14px;
    }
    .footer-top-right .search{
        width: 250px;
    }
    .footer-top-right .search input{
        width: 250px;
    }
    .news-adv-right{
       width:400px;
    }
}
@media screen and (max-width:768px){
    /* .bth{
        display: none;
    }
    .header-heart .directory{
        display: none;
    } */
    .footer{
        display: none;
    }
}
@media screen and (max-width:642px){
    .news-adv-right p{
        display: none;
    }
    .news-adv-right{
        width: 200px;
    }
}
@media screen and (max-width:546px){
       .news-nav{
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
       }
       .specialized-bottom-ul{
        gap: 10px;
       }
}
@media screen and (max-width:768px){}

